/* roulang page: index */
:root {
      --primary: #0369a1;
      --primary-dark: #0c4a6e;
      --slate-deep: #0f172a;
      --accent: #059669;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #1e293b;
      background-color: #f8fafc;
      font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
      line-height: 1.8;
      overflow-x: hidden;
    }
    .custom-gradient {
      background: linear-gradient(135deg, rgba(12, 74, 110, 0.96) 0%, rgba(15, 23, 42, 0.98) 100%);
    }
    .glass-card {
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(226, 232, 240, 0.8);
    }
    .text-balance {
      text-wrap: balance;
    }